AirHint found the following cheapest return flights from Seoul (GMP) to London (LHR) in December 2026 (see full year).

Return flights

01 Dec - 04 Dec	Air China
17 Dec - 24 Dec	Air China
21 Dec - 26 Dec	Air China
17 Dec - 23 Dec	Air China
04 Dec - 12 Dec	Air China
09 Dec - 19 Dec	Air China
09 Dec - 16 Dec	Air China
23 Dec - 27 Dec	Japan Airlines

Also check the deals for one-way flights from Seoul to London in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Seoul to London in December from $827

Return flights